This is interesting stuff and I think must add another fun demension in approximating realistic operations on the layout. One question, are the differences in speed limits Eastbound vs Westbound between some towns a result of grades or something else?
Ralph
That is exactly it, there is a 2.08% - 2.4% grade westbound from Stephen to Field, so I don't want trains going 50 scale MPH down that hill!
I've slowed the speed down to "65" on most of the down grades.